Two Turkish policemen who were killed during a raid against Islamic State suspects on Monday were victims of a suicide bomber, police said.

"Two police officers fell as martyrs and five were wounded when a suicide bomber blew himself up... as police entered the hideout," police in the Kurdish majority province of Diyarbakir said on Tuesday. Earlier, officials said the men had been killed by a booby trap bomb in the raid, which also left seven IS suspects dead.